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-   -   Erj 135er Wet Runway (https://www.pprune.org/questions/445656-erj-135er-wet-runway.html)

Icus1 14th Mar 2011 19:57

Erj 135er Wet Runway
 
Will appreciate if any ERJ135 drivers out there could help me with following performance info. Would like to know if a ERJ 135ER will be able to safely stop within ASDA with an abort just before V1 in following conditions:

Accelerate stop distance available: 7000 feet
Runway slope: Nil
Runway conditions:Wet
Temp:25 degree celcius(and also at 30 deg C)
Airfield elevation: 5500ft
Leg distance: +/-290nm
Passengers: 15( and also with 20)
Fuel: As would be required for leg distance with necessary reserves considered(Alternate 290nm from destination)

What would the decision be on "go - no go" for this flight given the above conditions with possible abort as consideration?(Is thrust reversers factored in?)

OverRun 17th Mar 2011 09:55

Hi Icus1

I'll take a look tomorrow when I get access to the AFM. The 135 doesn't always have reverse thrust - what runway and carrier are you looking at?

:ok:

OverRun 18th Mar 2011 02:32

For a leg of 290 NM, with 20 pax and 3 crew, I figure a takeoff weight of 15417 kg. At an airport elevation of 5500 feet, that requires 5200 feet of dry runway at 30 deg C air temp. I haven't got the wet runway details, but adding 15% for wet conditions makes the length required 5980 feet. So the ERJ 135ER should be able to safely stop within the 7000 feet ASDA with an abort just before V1.

Icus1 20th Mar 2011 17:13

Thank you for the reply, appreciate it. I do specifically need to now about wet conditions. I agree that under normal conditions it should be fine. The 15% you talk about, is that specifically for ERJ135's? We operate a smaller jet and under wet conditions we cannot make take off with the runway available at conditions indicated. The runway required for ASDA almost doubles. Just wondering how a certain operator can do it with a ERJ 135 which is a much heavier aircraft:ok:.

OverRun 21st Mar 2011 01:26

Icus1, the 15% is a generic figure from the old FAA AC 150/5325-4A. I don't have the specific wet runway figure for the 135.

The 135 is in airline service at a number of airports with runway lengths less than 7000 feet, and carrying larger loads than you described.

Icus1 21st Mar 2011 07:56

Great. Thanks for the help.

vanderwayne 21st Mar 2011 08:47

AN out of Eros?


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